30 lines
886 B
Diff
30 lines
886 B
Diff
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By default rk808's buck regulators switch voltage in multiple 100mV jumps.
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This seems to be too much for NanoPi M4V2 and makes it unstable.
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Shortening the steps to 50mV (4 multiple of base buck step which is 12.5mV)
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makes the NanoPi M4V2 stable.
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Tested with multiple hours of running memtester without a single failure.
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Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
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diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
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index 2dcaf497c..094440ce3 100644
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--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
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@@ -64,6 +64,10 @@ &gmac {
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rx_delay = <0x16>;
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};
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+&rk808 {
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+ max-buck-steps-per-change = <4>;
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+};
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+
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&vcc3v3_sys {
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vin-supply = <&vcc5v0_core>;
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};
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@@ -80,3 +84,4 @@ &vbus_typec {
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regulator-always-on;
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vin-supply = <&vdd_5v>;
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};
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+
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